#include<bits/stdc++.h> using namespace std; int main(){ int p,e,i,d; cin>>p>>e>>i>>d; int k; for(k=d+1;k<=d+21252;k++){ if((k-p)%23==0&& (k-e)%28==0&& (k-i)%33==0){ break; } } cout<<"the next triple peak occurs in "<<k-d<<" days."<<endl; return 0; }